1/148 BP 42 and BP 44 Armored Trains Series - By Panzer vs Tanks
(also available in 1/160)
After making an initial introduction on the KG144 BBS Panzer Vs Tanks is continuing to expand his range of BP42 and BP44 items to include other components of the train. Currently the items appear to be static models and as such would be at home with your Dragon Panzer Korps or Brengun.cz items. I image with some ingenuity and adaption you might be able to get these to run on 9mm N-Gauge track?
Items can be purchased via Shapeways: http://www.shapeways.com/shops/panzervstanks